diff options
Diffstat (limited to 'gr-fcd/lib/hid/hidmac.c')
| -rw-r--r-- | gr-fcd/lib/hid/hidmac.c | 1122 |
1 files changed, 0 insertions, 1122 deletions
diff --git a/gr-fcd/lib/hid/hidmac.c b/gr-fcd/lib/hid/hidmac.c deleted file mode 100644 index d8c69a8e5..000000000 --- a/gr-fcd/lib/hid/hidmac.c +++ /dev/null @@ -1,1122 +0,0 @@ -/******************************************************* - HIDAPI - Multi-Platform library for - communication with HID devices. - - Alan Ott - Signal 11 Software - - 2010-07-03 - - Copyright 2010, All Rights Reserved. - - At the discretion of the user of this library, - this software may be licensed under the terms of the - GNU Public License v3, a BSD-Style license, or the - original HIDAPI license as outlined in the LICENSE.txt, - LICENSE-gpl3.txt, LICENSE-bsd.txt, and LICENSE-orig.txt - files located at the root of the source distribution. - These files may also be found in the public source - code repository located at: - http://github.com/signal11/hidapi . -********************************************************/ - -/* See Apple Technical Note TN2187 for details on IOHidManager. */ - -#include <IOKit/hid/IOHIDManager.h> -#include <IOKit/hid/IOHIDKeys.h> -#include <CoreFoundation/CoreFoundation.h> -#include <wchar.h> -#include <locale.h> -#include <pthread.h> -#include <sys/time.h> -#include <unistd.h> - -#include "hidapi.h" - -/* Barrier implementation because Mac OSX doesn't have pthread_barrier. - It also doesn't have clock_gettime(). So much for POSIX and SUSv2. - This implementation came from Brent Priddy and was posted on - StackOverflow. It is used with his permission. */ -typedef int pthread_barrierattr_t; -typedef struct pthread_barrier { - pthread_mutex_t mutex; - pthread_cond_t cond; - int count; - int trip_count; -} pthread_barrier_t; - -static int pthread_barrier_init(pthread_barrier_t *barrier, const pthread_barrierattr_t *attr, unsigned int count) -{ - if(count == 0) { - errno = EINVAL; - return -1; - } - - if(pthread_mutex_init(&barrier->mutex, 0) < 0) { - return -1; - } - if(pthread_cond_init(&barrier->cond, 0) < 0) { - pthread_mutex_destroy(&barrier->mutex); - return -1; - } - barrier->trip_count = count; - barrier->count = 0; - - return 0; -} - -static int pthread_barrier_destroy(pthread_barrier_t *barrier) -{ - pthread_cond_destroy(&barrier->cond); - pthread_mutex_destroy(&barrier->mutex); - return 0; -} - -static int pthread_barrier_wait(pthread_barrier_t *barrier) -{ - pthread_mutex_lock(&barrier->mutex); - ++(barrier->count); - if(barrier->count >= barrier->trip_count) - { - barrier->count = 0; - pthread_cond_broadcast(&barrier->cond); - pthread_mutex_unlock(&barrier->mutex); - return 1; - } - else - { - pthread_cond_wait(&barrier->cond, &(barrier->mutex)); - pthread_mutex_unlock(&barrier->mutex); - return 0; - } -} - -static int return_data(hid_device *dev, unsigned char *data, size_t length); - -/* Linked List of input reports received from the device. */ -struct input_report { - uint8_t *data; - size_t len; - struct input_report *next; -}; - -struct hid_device_ { - IOHIDDeviceRef device_handle; - int blocking; - int uses_numbered_reports; - int disconnected; - CFStringRef run_loop_mode; - CFRunLoopRef run_loop; - CFRunLoopSourceRef source; - uint8_t *input_report_buf; - CFIndex max_input_report_len; - struct input_report *input_reports; - - pthread_t thread; - pthread_mutex_t mutex; /* Protects input_reports */ - pthread_cond_t condition; - pthread_barrier_t barrier; /* Ensures correct startup sequence */ - pthread_barrier_t shutdown_barrier; /* Ensures correct shutdown sequence */ - int shutdown_thread; - - hid_device *next; -}; - -/* Static list of all the devices open. This way when a device gets - disconnected, its hid_device structure can be marked as disconnected - from hid_device_removal_callback(). */ -static hid_device *device_list = NULL; -static pthread_mutex_t device_list_mutex = PTHREAD_MUTEX_INITIALIZER; - -static hid_device *new_hid_device(void) -{ - hid_device *dev = calloc(1, sizeof(hid_device)); - dev->device_handle = NULL; - dev->blocking = 1; - dev->uses_numbered_reports = 0; - dev->disconnected = 0; - dev->run_loop_mode = NULL; - dev->run_loop = NULL; - dev->source = NULL; - dev->input_report_buf = NULL; - dev->input_reports = NULL; - dev->shutdown_thread = 0; - dev->next = NULL; - - /* Thread objects */ - pthread_mutex_init(&dev->mutex, NULL); - pthread_cond_init(&dev->condition, NULL); - pthread_barrier_init(&dev->barrier, NULL, 2); - pthread_barrier_init(&dev->shutdown_barrier, NULL, 2); - - /* Add the new record to the device_list. */ - pthread_mutex_lock(&device_list_mutex); - if (!device_list) - device_list = dev; - else { - hid_device *d = device_list; - while (d) { - if (!d->next) { - d->next = dev; - break; - } - d = d->next; - } - } - pthread_mutex_unlock(&device_list_mutex); - - return dev; -} - -static void free_hid_device(hid_device *dev) -{ - if (!dev) - return; - - /* Delete any input reports still left over. */ - struct input_report *rpt = dev->input_reports; - while (rpt) { - struct input_report *next = rpt->next; - free(rpt->data); - free(rpt); - rpt = next; - } - - /* Free the string and the report buffer. The check for NULL - is necessary here as CFRelease() doesn't handle NULL like - free() and others do. */ - if (dev->run_loop_mode) - CFRelease(dev->run_loop_mode); - if (dev->source) - CFRelease(dev->source); - free(dev->input_report_buf); - - /* Clean up the thread objects */ - pthread_barrier_destroy(&dev->shutdown_barrier); - pthread_barrier_destroy(&dev->barrier); - pthread_cond_destroy(&dev->condition); - pthread_mutex_destroy(&dev->mutex); - - /* Remove it from the device list. */ - pthread_mutex_lock(&device_list_mutex); - hid_device *d = device_list; - if (d == dev) { - device_list = d->next; - } - else { - while (d) { - if (d->next == dev) { - d->next = d->next->next; - break; - } - - d = d->next; - } - } - pthread_mutex_unlock(&device_list_mutex); - - /* Free the structure itself. */ - free(dev); -} - -static IOHIDManagerRef hid_mgr = 0x0; - - -#if 0 -static void register_error(hid_device *device, const char *op) -{ - -} -#endif - - -static int32_t get_int_property(IOHIDDeviceRef device, CFStringRef key) -{ - CFTypeRef ref; - int32_t value; - - ref = IOHIDDeviceGetProperty(device, key); - if (ref) { - if (CFGetTypeID(ref) == CFNumberGetTypeID()) { - CFNumberGetValue((CFNumberRef) ref, kCFNumberSInt32Type, &value); - return value; - } - } - return 0; -} - -static unsigned short get_vendor_id(IOHIDDeviceRef device) -{ - return get_int_property(device, CFSTR(kIOHIDVendorIDKey)); -} - -static unsigned short get_product_id(IOHIDDeviceRef device) -{ - return get_int_property(device, CFSTR(kIOHIDProductIDKey)); -} - - -static int32_t get_max_report_length(IOHIDDeviceRef device) -{ - return get_int_property(device, CFSTR(kIOHIDMaxInputReportSizeKey)); -} - -static int get_string_property(IOHIDDeviceRef device, CFStringRef prop, wchar_t *buf, size_t len) -{ - CFStringRef str = IOHIDDeviceGetProperty(device, prop); - - buf[0] = 0x0000; - - if (str) { - CFRange range; - range.location = 0; - range.length = len; - CFIndex used_buf_len; - CFStringGetBytes(str, - range, - kCFStringEncodingUTF32LE, - (char)'?', - FALSE, - (UInt8*)buf, - len, - &used_buf_len); - buf[len-1] = 0x00000000; - return used_buf_len; - } - else - return 0; - -} - -static int get_string_property_utf8(IOHIDDeviceRef device, CFStringRef prop, char *buf, size_t len) -{ - CFStringRef str = IOHIDDeviceGetProperty(device, prop); - - buf[0] = 0x0000; - - if (str) { - CFRange range; - range.location = 0; - range.length = len; - CFIndex used_buf_len; - CFStringGetBytes(str, - range, - kCFStringEncodingUTF8, - (char)'?', - FALSE, - (UInt8*)buf, - len, - &used_buf_len); - buf[len-1] = 0x00000000; - return used_buf_len; - } - else - return 0; - -} - - -static int get_serial_number(IOHIDDeviceRef device, wchar_t *buf, size_t len) -{ - return get_string_property(device, CFSTR(kIOHIDSerialNumberKey), buf, len); -} - -static int get_manufacturer_string(IOHIDDeviceRef device, wchar_t *buf, size_t len) -{ - return get_string_property(device, CFSTR(kIOHIDManufacturerKey), buf, len); -} - -static int get_product_string(IOHIDDeviceRef device, wchar_t *buf, size_t len) -{ - return get_string_property(device, CFSTR(kIOHIDProductKey), buf, len); -} - - -/* Implementation of wcsdup() for Mac. */ -static wchar_t *dup_wcs(const wchar_t *s) -{ - size_t len = wcslen(s); - wchar_t *ret = malloc((len+1)*sizeof(wchar_t)); - wcscpy(ret, s); - - return ret; -} - - -static int make_path(IOHIDDeviceRef device, char *buf, size_t len) -{ - int res; - unsigned short vid, pid; - char transport[32]; - - buf[0] = '\0'; - - res = get_string_property_utf8( - device, CFSTR(kIOHIDTransportKey), - transport, sizeof(transport)); - - if (!res) - return -1; - - vid = get_vendor_id(device); - pid = get_product_id(device); - - res = snprintf(buf, len, "%s_%04hx_%04hx_%p", - transport, vid, pid, device); - - - buf[len-1] = '\0'; - return res+1; -} - -static int init_hid_manager(void) -{ - IOReturn res; - - /* Initialize all the HID Manager Objects */ - hid_mgr = IOHIDManagerCreate(kCFAllocatorDefault, kIOHIDOptionsTypeNone); - IOHIDManagerSetDeviceMatching(hid_mgr, NULL); - IOHIDManagerScheduleWithRunLoop(hid_mgr, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode); - res = IOHIDManagerOpen(hid_mgr, kIOHIDOptionsTypeNone); - return (res == kIOReturnSuccess)? 0: -1; -} - -int HID_API_EXPORT hid_init(void) -{ - if (!hid_mgr) { - if (init_hid_manager() < 0) { - hid_exit(); - return -1; - } - } - return 0; -} - -int HID_API_EXPORT hid_exit(void) -{ - if (hid_mgr) { - /* Close the HID manager. */ - IOHIDManagerClose(hid_mgr, kIOHIDOptionsTypeNone); - CFRelease(hid_mgr); - hid_mgr = NULL; - } - - return 0; -} - -struct hid_device_info HID_API_EXPORT *hid_enumerate(unsigned short vendor_id, unsigned short product_id) -{ - struct hid_device_info *root = NULL; // return object - struct hid_device_info *cur_dev = NULL; - CFIndex num_devices; - int i; - - setlocale(LC_ALL,""); - - /* Set up the HID Manager if it hasn't been done */ - hid_init(); - - /* Get a list of the Devices */ - CFSetRef device_set = IOHIDManagerCopyDevices(hid_mgr); - - /* Convert the list into a C array so we can iterate easily. */ - num_devices = CFSetGetCount(device_set); - IOHIDDeviceRef *device_array = calloc(num_devices, sizeof(IOHIDDeviceRef)); - CFSetGetValues(device_set, (const void **) device_array); - - /* Iterate over each device, making an entry for it. */ - for (i = 0; i < num_devices; i++) { - unsigned short dev_vid; - unsigned short dev_pid; - #define BUF_LEN 256 - wchar_t buf[BUF_LEN]; - char cbuf[BUF_LEN]; - - IOHIDDeviceRef dev = device_array[i]; - - if (!dev) { - continue; - } - dev_vid = get_vendor_id(dev); - dev_pid = get_product_id(dev); - - /* Check the VID/PID against the arguments */ - if ((vendor_id == 0x0 && product_id == 0x0) || - (vendor_id == dev_vid && product_id == dev_pid)) { - struct hid_device_info *tmp; - size_t len; - - /* VID/PID match. Create the record. */ - tmp = malloc(sizeof(struct hid_device_info)); - if (cur_dev) { - cur_dev->next = tmp; - } - else { - root = tmp; - } - cur_dev = tmp; - - // Get the Usage Page and Usage for this device. - cur_dev->usage_page = get_int_property(dev, CFSTR(kIOHIDPrimaryUsagePageKey)); - cur_dev->usage = get_int_property(dev, CFSTR(kIOHIDPrimaryUsageKey)); - - /* Fill out the record */ - cur_dev->next = NULL; - len = make_path(dev, cbuf, sizeof(cbuf)); - cur_dev->path = strdup(cbuf); - - /* Serial Number */ - get_serial_number(dev, buf, BUF_LEN); - cur_dev->serial_number = dup_wcs(buf); - - /* Manufacturer and Product strings */ - get_manufacturer_string(dev, buf, BUF_LEN); - cur_dev->manufacturer_string = dup_wcs(buf); - get_product_string(dev, buf, BUF_LEN); - cur_dev->product_string = dup_wcs(buf); - - /* VID/PID */ - cur_dev->vendor_id = dev_vid; - cur_dev->product_id = dev_pid; - - /* Release Number */ - cur_dev->release_number = get_int_property(dev, CFSTR(kIOHIDVersionNumberKey)); - - /* Interface Number (Unsupported on Mac)*/ - cur_dev->interface_number = -1; - } - } - - free(device_array); - CFRelease(device_set); - - return root; -} - -void HID_API_EXPORT hid_free_enumeration(struct hid_device_info *devs) -{ - /* This function is identical to the Linux version. Platform independent. */ - struct hid_device_info *d = devs; - while (d) { - struct hid_device_info *next = d->next; - free(d->path); - free(d->serial_number); - free(d->manufacturer_string); - free(d->product_string); - free(d); - d = next; - } -} - -hid_device * HID_API_EXPORT hid_open(unsigned short vendor_id, unsigned short product_id, wchar_t *serial_number) -{ - /* This function is identical to the Linux version. Platform independent. */ - struct hid_device_info *devs, *cur_dev; - const char *path_to_open = NULL; - hid_device * handle = NULL; - - devs = hid_enumerate(vendor_id, product_id); - cur_dev = devs; - while (cur_dev) { - if (cur_dev->vendor_id == vendor_id && - cur_dev->product_id == product_id) { - if (serial_number) { - if (wcscmp(serial_number, cur_dev->serial_number) == 0) { - path_to_open = cur_dev->path; - break; - } - } - else { - path_to_open = cur_dev->path; - break; - } - } - cur_dev = cur_dev->next; - } - - if (path_to_open) { - /* Open the device */ - handle = hid_open_path(path_to_open); - } - - hid_free_enumeration(devs); - - return handle; -} - -static void hid_device_removal_callback(void *context, IOReturn result, - void *sender, IOHIDDeviceRef dev_ref) -{ - /* Stop the Run Loop for this device. */ - pthread_mutex_lock(&device_list_mutex); - hid_device *d = device_list; - while (d) { - if (d->device_handle == dev_ref) { - d->disconnected = 1; - CFRunLoopStop(d->run_loop); - } - - d = d->next; - } - pthread_mutex_unlock(&device_list_mutex); -} - -/* The Run Loop calls this function for each input report received. - This function puts the data into a linked list to be picked up by - hid_read(). */ -static void hid_report_callback(void *context, IOReturn result, void *sender, - IOHIDReportType report_type, uint32_t report_id, - uint8_t *report, CFIndex report_length) -{ - struct input_report *rpt; - hid_device *dev = context; - - /* Make a new Input Report object */ - rpt = calloc(1, sizeof(struct input_report)); - rpt->data = calloc(1, report_length); - memcpy(rpt->data, report, report_length); - rpt->len = report_length; - rpt->next = NULL; - - /* Lock this section */ - pthread_mutex_lock(&dev->mutex); - - /* Attach the new report object to the end of the list. */ - if (dev->input_reports == NULL) { - /* The list is empty. Put it at the root. */ - dev->input_reports = rpt; - } - else { - /* Find the end of the list and attach. */ - struct input_report *cur = dev->input_reports; - int num_queued = 0; - while (cur->next != NULL) { - cur = cur->next; - num_queued++; - } - cur->next = rpt; - - /* Pop one off if we've reached 30 in the queue. This - way we don't grow forever if the user never reads - anything from the device. */ - if (num_queued > 30) { - return_data(dev, NULL, 0); - } - } - - /* Signal a waiting thread that there is data. */ - pthread_cond_signal(&dev->condition); - - /* Unlock */ - pthread_mutex_unlock(&dev->mutex); - -} - -/* This gets called when the read_thred's run loop gets signaled by - hid_close(), and serves to stop the read_thread's run loop. */ -static void perform_signal_callback(void *context) -{ - hid_device *dev = context; - CFRunLoopStop(dev->run_loop); //TODO: CFRunLoopGetCurrent() -} - -static void *read_thread(void *param) -{ - hid_device *dev = param; - - /* Move the device's run loop to this thread. */ - IOHIDDeviceScheduleWithRunLoop(dev->device_handle, CFRunLoopGetCurrent(), dev->run_loop_mode); - - /* Create the RunLoopSource which is used to signal the - event loop to stop when hid_close() is called. */ - CFRunLoopSourceContext ctx; - memset(&ctx, 0, sizeof(ctx)); - ctx.version = 0; - ctx.info = dev; - ctx.perform = &perform_signal_callback; - dev->source = CFRunLoopSourceCreate(kCFAllocatorDefault, 0/*order*/, &ctx); - CFRunLoopAddSource(CFRunLoopGetCurrent(), dev->source, dev->run_loop_mode); - - /* Store off the Run Loop so it can be stopped from hid_close() - and on device disconnection. */ - dev->run_loop = CFRunLoopGetCurrent(); - - /* Notify the main thread that the read thread is up and running. */ - pthread_barrier_wait(&dev->barrier); - - /* Run the Event Loop. CFRunLoopRunInMode() will dispatch HID input - reports into the hid_report_callback(). */ - SInt32 code; - while (!dev->shutdown_thread && !dev->disconnected) { - code = CFRunLoopRunInMode(dev->run_loop_mode, 1000/*sec*/, FALSE); - /* Return if the device has been disconnected */ - if (code == kCFRunLoopRunFinished) { - dev->disconnected = 1; - break; - } - - - /* Break if The Run Loop returns Finished or Stopped. */ - if (code != kCFRunLoopRunTimedOut && - code != kCFRunLoopRunHandledSource) { - /* There was some kind of error. Setting - shutdown seems to make sense, but - there may be something else more appropriate */ - dev->shutdown_thread = 1; - break; - } - } - - /* Now that the read thread is stopping, Wake any threads which are - waiting on data (in hid_read_timeout()). Do this under a mutex to - make sure that a thread which is about to go to sleep waiting on - the condition acutally will go to sleep before the condition is - signaled. */ - pthread_mutex_lock(&dev->mutex); - pthread_cond_broadcast(&dev->condition); - pthread_mutex_unlock(&dev->mutex); - - /* Close the OS handle to the device, but only if it's not - been unplugged. If it's been unplugged, then calling - IOHIDDeviceClose() will crash. */ - if (!dev->disconnected) { - IOHIDDeviceClose(dev->device_handle, kIOHIDOptionsTypeNone); - } - - /* Wait here until hid_close() is called and makes it past - the call to CFRunLoopWakeUp(). This thread still needs to - be valid when that function is called on the other thread. */ - pthread_barrier_wait(&dev->shutdown_barrier); - - return NULL; -} - -hid_device * HID_API_EXPORT hid_open_path(const char *path) -{ - int i; - hid_device *dev = NULL; - CFIndex num_devices; - - dev = new_hid_device(); - - /* Set up the HID Manager if it hasn't been done */ - hid_init(); - - CFSetRef device_set = IOHIDManagerCopyDevices(hid_mgr); - - num_devices = CFSetGetCount(device_set); - IOHIDDeviceRef *device_array = calloc(num_devices, sizeof(IOHIDDeviceRef)); - CFSetGetValues(device_set, (const void **) device_array); - for (i = 0; i < num_devices; i++) { - char cbuf[BUF_LEN]; - size_t len; - IOHIDDeviceRef os_dev = device_array[i]; - - len = make_path(os_dev, cbuf, sizeof(cbuf)); - if (!strcmp(cbuf, path)) { - // Matched Paths. Open this Device. - IOReturn ret = IOHIDDeviceOpen(os_dev, kIOHIDOptionsTypeNone); - if (ret == kIOReturnSuccess) { - char str[32]; - - free(device_array); - CFRelease(device_set); - dev->device_handle = os_dev; - - /* Create the buffers for receiving data */ - dev->max_input_report_len = (CFIndex) get_max_report_length(os_dev); - dev->input_report_buf = calloc(dev->max_input_report_len, sizeof(uint8_t)); - - /* Create the Run Loop Mode for this device. - printing the reference seems to work. */ - sprintf(str, "HIDAPI_%p", os_dev); - dev->run_loop_mode = - CFStringCreateWithCString(NULL, str, kCFStringEncodingASCII); - - /* Attach the device to a Run Loop */ - IOHIDDeviceRegisterInputReportCallback( - os_dev, dev->input_report_buf, dev->max_input_report_len, - &hid_report_callback, dev); - IOHIDManagerRegisterDeviceRemovalCallback(hid_mgr, hid_device_removal_callback, NULL); - - /* Start the read thread */ - pthread_create(&dev->thread, NULL, read_thread, dev); - - /* Wait here for the read thread to be initialized. */ - pthread_barrier_wait(&dev->barrier); - - return dev; - } - else { - goto return_error; - } - } - } - -return_error: - free(device_array); - CFRelease(device_set); - free_hid_device(dev); - return NULL; -} - -static int set_report(hid_device *dev, IOHIDReportType type, const unsigned char *data, size_t length) -{ - const unsigned char *data_to_send; - size_t length_to_send; - IOReturn res; - - /* Return if the device has been disconnected. */ - if (dev->disconnected) - return -1; - - if (data[0] == 0x0) { - /* Not using numbered Reports. - Don't send the report number. */ - data_to_send = data+1; - length_to_send = length-1; - } - else { - /* Using numbered Reports. - Send the Report Number */ - data_to_send = data; - length_to_send = length; - } - - if (!dev->disconnected) { - res = IOHIDDeviceSetReport(dev->device_handle, - type, - data[0], /* Report ID*/ - data_to_send, length_to_send); - - if (res == kIOReturnSuccess) { - return length; - } - else - return -1; - } - - return -1; -} - -int HID_API_EXPORT hid_write(hid_device *dev, const unsigned char *data, size_t length) -{ - return set_report(dev, kIOHIDReportTypeOutput, data, length); -} - -/* Helper function, so that this isn't duplicated in hid_read(). */ -static int return_data(hid_device *dev, unsigned char *data, size_t length) -{ - /* Copy the data out of the linked list item (rpt) into the - return buffer (data), and delete the liked list item. */ - struct input_report *rpt = dev->input_reports; - size_t len = (length < rpt->len)? length: rpt->len; - memcpy(data, rpt->data, len); - dev->input_reports = rpt->next; - free(rpt->data); - free(rpt); - return len; -} - -static int cond_wait(const hid_device *dev, pthread_cond_t *cond, pthread_mutex_t *mutex) -{ - while (!dev->input_reports) { - int res = pthread_cond_wait(cond, mutex); - if (res != 0) - return res; - - /* A res of 0 means we may have been signaled or it may - be a spurious wakeup. Check to see that there's acutally - data in the queue before returning, and if not, go back - to sleep. See the pthread_cond_timedwait() man page for - details. */ - - if (dev->shutdown_thread || dev->disconnected) - return -1; - } - - return 0; -} - -static int cond_timedwait(const hid_device *dev, pthread_cond_t *cond, pthread_mutex_t *mutex, const struct timespec *abstime) -{ - while (!dev->input_reports) { - int res = pthread_cond_timedwait(cond, mutex, abstime); - if (res != 0) - return res; - - /* A res of 0 means we may have been signaled or it may - be a spurious wakeup. Check to see that there's acutally - data in the queue before returning, and if not, go back - to sleep. See the pthread_cond_timedwait() man page for - details. */ - - if (dev->shutdown_thread || dev->disconnected) - return -1; - } - - return 0; - -} - -int HID_API_EXPORT hid_read_timeout(hid_device *dev, unsigned char *data, size_t length, int milliseconds) -{ - int bytes_read = -1; - - /* Lock the access to the report list. */ - pthread_mutex_lock(&dev->mutex); - - /* There's an input report queued up. Return it. */ - if (dev->input_reports) { - /* Return the first one */ - bytes_read = return_data(dev, data, length); - goto ret; - } - - /* Return if the device has been disconnected. */ - if (dev->disconnected) { - bytes_read = -1; - goto ret; - } - - if (dev->shutdown_thread) { - /* This means the device has been closed (or there - has been an error. An error code of -1 should - be returned. */ - bytes_read = -1; - goto ret; - } - - /* There is no data. Go to sleep and wait for data. */ - - if (milliseconds == -1) { - /* Blocking */ - int res; - res = cond_wait(dev, &dev->condition, &dev->mutex); - if (res == 0) - bytes_read = return_data(dev, data, length); - else { - /* There was an error, or a device disconnection. */ - bytes_read = -1; - } - } - else if (milliseconds > 0) { - /* Non-blocking, but called with timeout. */ - int res; - struct timespec ts; - struct timeval tv; - gettimeofday(&tv, NULL); - TIMEVAL_TO_TIMESPEC(&tv, &ts); - ts.tv_sec += milliseconds / 1000; - ts.tv_nsec += (milliseconds % 1000) * 1000000; - if (ts.tv_nsec >= 1000000000L) { - ts.tv_sec++; - ts.tv_nsec -= 1000000000L; - } - - res = cond_timedwait(dev, &dev->condition, &dev->mutex, &ts); - if (res == 0) - bytes_read = return_data(dev, data, length); - else if (res == ETIMEDOUT) - bytes_read = 0; - else - bytes_read = -1; - } - else { - /* Purely non-blocking */ - bytes_read = 0; - } - -ret: - /* Unlock */ - pthread_mutex_unlock(&dev->mutex); - return bytes_read; -} - -int HID_API_EXPORT hid_read(hid_device *dev, unsigned char *data, size_t length) -{ - return hid_read_timeout(dev, data, length, (dev->blocking)? -1: 0); -} - -int HID_API_EXPORT hid_set_nonblocking(hid_device *dev, int nonblock) -{ - /* All Nonblocking operation is handled by the library. */ - dev->blocking = !nonblock; - - return 0; -} - -int HID_API_EXPORT hid_send_feature_report(hid_device *dev, const unsigned char *data, size_t length) -{ - return set_report(dev, kIOHIDReportTypeFeature, data, length); -} - -int HID_API_EXPORT hid_get_feature_report(hid_device *dev, unsigned char *data, size_t length) -{ - CFIndex len = length; - IOReturn res; - - /* Return if the device has been unplugged. */ - if (dev->disconnected) - return -1; - - res = IOHIDDeviceGetReport(dev->device_handle, - kIOHIDReportTypeFeature, - data[0], /* Report ID */ - data, &len); - if (res == kIOReturnSuccess) - return len; - else - return -1; -} - - -void HID_API_EXPORT hid_close(hid_device *dev) -{ - if (!dev) - return; - - /* Disconnect the report callback before close. */ - if (!dev->disconnected) { - IOHIDDeviceRegisterInputReportCallback( - dev->device_handle, dev->input_report_buf, dev->max_input_report_len, - NULL, dev); - IOHIDManagerRegisterDeviceRemovalCallback(hid_mgr, NULL, dev); - IOHIDDeviceUnscheduleFromRunLoop(dev->device_handle, dev->run_loop, dev->run_loop_mode); - IOHIDDeviceScheduleWithRunLoop(dev->device_handle, CFRunLoopGetMain(), kCFRunLoopDefaultMode); - } - - /* Cause read_thread() to stop. */ - dev->shutdown_thread = 1; - - /* Wake up the run thread's event loop so that the thread can exit. */ - CFRunLoopSourceSignal(dev->source); - CFRunLoopWakeUp(dev->run_loop); - - /* Notify the read thread that it can shut down now. */ - pthread_barrier_wait(&dev->shutdown_barrier); - - /* Wait for read_thread() to end. */ - pthread_join(dev->thread, NULL); - - /* Close the OS handle to the device, but only if it's not - been unplugged. If it's been unplugged, then calling - IOHIDDeviceClose() will crash. */ - if (!dev->disconnected) { - IOHIDDeviceClose(dev->device_handle, kIOHIDOptionsTypeNone); - } - - /* Clear out the queue of received reports. */ - pthread_mutex_lock(&dev->mutex); - while (dev->input_reports) { - return_data(dev, NULL, 0); - } - pthread_mutex_unlock(&dev->mutex); - - free_hid_device(dev); -} - -int HID_API_EXPORT_CALL hid_get_manufacturer_string(hid_device *dev, wchar_t *string, size_t maxlen) -{ - return get_manufacturer_string(dev->device_handle, string, maxlen); -} - -int HID_API_EXPORT_CALL hid_get_product_string(hid_device *dev, wchar_t *string, size_t maxlen) -{ - return get_product_string(dev->device_handle, string, maxlen); -} - -int HID_API_EXPORT_CALL hid_get_serial_number_string(hid_device *dev, wchar_t *string, size_t maxlen) -{ - return get_serial_number(dev->device_handle, string, maxlen); -} - -int HID_API_EXPORT_CALL hid_get_indexed_string(hid_device *dev, int string_index, wchar_t *string, size_t maxlen) -{ - // TODO: - - return 0; -} - - -HID_API_EXPORT const wchar_t * HID_API_CALL hid_error(hid_device *dev) -{ - // TODO: - - return NULL; -} - - - - - - -#if 0 -static int32_t get_location_id(IOHIDDeviceRef device) -{ - return get_int_property(device, CFSTR(kIOHIDLocationIDKey)); -} - -static int32_t get_usage(IOHIDDeviceRef device) -{ - int32_t res; - res = get_int_property(device, CFSTR(kIOHIDDeviceUsageKey)); - if (!res) - res = get_int_property(device, CFSTR(kIOHIDPrimaryUsageKey)); - return res; -} - -static int32_t get_usage_page(IOHIDDeviceRef device) -{ - int32_t res; - res = get_int_property(device, CFSTR(kIOHIDDeviceUsagePageKey)); - if (!res) - res = get_int_property(device, CFSTR(kIOHIDPrimaryUsagePageKey)); - return res; -} - -static int get_transport(IOHIDDeviceRef device, wchar_t *buf, size_t len) -{ - return get_string_property(device, CFSTR(kIOHIDTransportKey), buf, len); -} - - -int main(void) -{ - IOHIDManagerRef mgr; - int i; - - mgr = IOHIDManagerCreate(kCFAllocatorDefault, kIOHIDOptionsTypeNone); - IOHIDManagerSetDeviceMatching(mgr, NULL); - IOHIDManagerOpen(mgr, kIOHIDOptionsTypeNone); - - CFSetRef device_set = IOHIDManagerCopyDevices(mgr); - - CFIndex num_devices = CFSetGetCount(device_set); - IOHIDDeviceRef *device_array = calloc(num_devices, sizeof(IOHIDDeviceRef)); - CFSetGetValues(device_set, (const void **) device_array); - - setlocale(LC_ALL, ""); - - for (i = 0; i < num_devices; i++) { - IOHIDDeviceRef dev = device_array[i]; - printf("Device: %p\n", dev); - printf(" %04hx %04hx\n", get_vendor_id(dev), get_product_id(dev)); - - wchar_t serial[256], buf[256]; - char cbuf[256]; - get_serial_number(dev, serial, 256); - - - printf(" Serial: %ls\n", serial); - printf(" Loc: %ld\n", get_location_id(dev)); - get_transport(dev, buf, 256); - printf(" Trans: %ls\n", buf); - make_path(dev, cbuf, 256); - printf(" Path: %s\n", cbuf); - - } - - return 0; -} -#endif |